Orthopedic implant test mold system based on orthopedics department

Abstract

The invention is applied to the technical field of orthopedic implants, and particularly discloses an orthopedic implant test mold system based on orthopedics, which comprises an implant module, a simulated bone module, a simulated test module, a mechanical simulation module, a computer, a data acquisition module and a data analysis module. According to the orthopedic implant mold testing system based on the orthopedics department, a simulation testing module formed by connecting an artificial bone of an implanted bone and a human body simulation bone of a simulation bone is arranged to conduct a preoperative mold testing process on the implanted bone, and a micro pressure sensor and a micro distance measuring sensor are installed on the surfaces of the artificial bone and the human body simulation bone correspondingly; the miniature pressure sensor and the miniature distance measuring sensor are used for monitoring pressure data and distance data of the artificial bone and the human body simulation bone in the mold testing process in real time, then data support is provided for doctors, the influence of insufficient experience or individual difference of the doctors on the mold testing result is reduced, and the success rate of the orthopedic implantation operation is increased.

Description

Technical Field

[0001] The present invention relates to the technical field of orthopedic implants, and particularly to an orthopedic implant trial mold system for orthopedics. Background Art

[0002] Orthopedic implants refer to a type of medical device used for the treatment, repair, replacement, or enhancement of the functions of tissues such as bones and joints in the human orthopedics. Implants are usually made of metals, ceramics, polymer materials, etc., and are implanted into the body through surgery to achieve functions such as fracture fixation and repair, joint replacement and reconstruction, and bone defect repair. Since there are differences in the size, shape, and structure of each person's bones, in order to ensure the matching degree between the implant and the patient's bones, before the implant is implanted into the human body for use, it is necessary to perform a trial mold on the implant to ensure the success of orthopedic implant surgery and the recovery of the patient.

[0003] Currently, during the process of preoperative imaging examination and intraoperative trial mold testing by implanting different models of implants, the selection of implants mainly relies on the clinical experience of doctors and the subjective feelings of patients to determine the final implant. However, this method is highly subjective, different doctors may obtain different judgment results, and it has high requirements for doctors' experience, which is not conducive to the recovery of patients. Summary of the Invention

[0004] The purpose of the present invention is to provide an orthopedic implant trial mold system for orthopedics to solve the problem that the current process of trial molding orthopedic implants lacks data support and relies on doctors' clinical experience as mentioned in the above background art.

[0005] To achieve the above purpose, the present invention provides the following technical solution: An orthopedic implant trial mold system for orthopedics includes an implant module, a simulated bone module, a simulation test module, a mechanical simulation module, a computer, a data acquisition module, and a data analysis module. The implant module and the simulated bone module constitute the simulation test module. The simulation test module is connected to the data acquisition module through a wireless network. The data acquisition module is connected to the computer. The computer is connected to the data analysis module and the mechanical simulation module. The mechanical simulation module is connected to the simulated bone module. The simulation test module uses the connection between the implant module and the simulated bone module to simulate the movement of the implant after being implanted into the human bone, and then performs a trial mold test on the implant to obtain implant trial mold data.

[0006] Preferably, the implant module includes an implant bone part and a wear mark part. The implant bone part is an artificial bone made of titanium alloy material. The wear mark part is provided with wear mark points. The wear mark points are fluorescent coatings. The wear mark points of the wear mark part are arranged on the outer surface of the artificial bone.

[0007] With the above technical solution, the fluorescence coating provided on the outer surface of the artificial bone can simulate the wear condition after the artificial bone is implanted, and assist in judging the fitting degree of the artificial bone.

[0008] Preferably, the simulated bone module includes a simulated bone part, and the simulated bone part is a human body-simulating bone made of hydroxyapatite.

[0009] With the above technical solution, connecting the human body-simulating bone made of hydroxyapatite with the artificial bone can simulate the situation after the artificial bone is implanted into the human body, and assist in judging the fitting degree of the artificial bone.

[0010] Preferably, the mechanical simulation module includes a simulated motion traction frame. The simulated motion traction frame is connected to the human body-simulating bone of the simulated bone module. The simulated motion traction frame is internally provided with a controller. The controller of the simulated motion traction frame is connected to a computer. The computer remotely operates the controller to realize the motion of the simulated motion traction frame, and the simulated motion traction frame drives the human body-simulating bone to realize the motion simulation of the human bone.

[0011] With the above technical solution, the connection between the simulated motion traction frame and the human body-simulating bone can simulate the fitting degree judgment of the artificial bone after implantation under the human motion state.

[0012] Preferably, the data acquisition module includes a sensor part and an image acquisition part. The sensor part includes a micro pressure sensor and a micro distance sensor. One set of the micro pressure sensor and the micro distance sensor is provided. One set of the micro pressure sensor and the micro distance sensor is installed on the surface of the artificial bone of the implanted bone part, and the other set of the micro pressure sensor and the micro distance sensor is installed on the surface of the human body-simulating bone of the simulated bone part. The micro pressure sensor and the micro distance sensor are connected to the computer through wireless signals. The image acquisition part includes a CT scanner, and the CT scanner is connected to the computer.

[0013] With the above technical solution, the sensor part and the image acquisition part provided in the data acquisition module are used to collect pressure data, distance data and image data respectively, and use the data to assist in judging the fitting degree of the artificial bone implantation.

[0014] Preferably, the data analysis module receives the data from the data acquisition module. The data types include the pressure data of the micro pressure sensor, the distance data of the micro distance sensor and the image data of the CT scanner. After the image data is input into the computer, it is used to construct a three-dimensional image model of the artificial bone and the human body-simulating bone.

[0015] With the above technical solution, the image data collected by the CT scanner can be used to construct a three-dimensional image model of the artificial bone and the human simulated bone, visually showing the fitting situation after the artificial bone is implanted.

[0016] Preferably, the pressure data and distance data are respectively marked and recorded as follows. The pressure data at the artificial bone part of the implanted bone is marked as X, and the pressure data of multiple artificial bones constitutes a data set A = {X1, X2, X3... X n ,}, the pressure data of the human simulated bone in the simulated bone part is marked as x, and the pressure data of multiple human simulated bones constitutes a data set a = {x1, x2, x3... x n ,}, the distance data at the artificial bone part of the implanted bone is marked as Y, and the distance data of multiple artificial bones constitutes a data set B = {Y1, Y2, Y3... Y n ,}, the distance data of the human simulated bone in the simulated bone part is marked as y, and the pressure data of multiple human simulated bones constitutes a data set b = {y1, y2, y3... y n ,};

[0017] Calculate the standard deviation of the pressure data, and the formula is as follows:

[0018]

[0019] Where Aa is the pressure data; σ is the population standard deviation; n is the sample size; Aa i is the i-th data value in the sample; is the average value of the sample data;

[0020] The σ Aa data is used to judge the distribution uniformity of the pressure data;

[0021] Calculate the difference between B and b,

[0022] Δ = B i ― b i

[0023] Where Bb i is the i-th data value in the sample,

[0024] The Δ data is used to eliminate the outliers in the distance data.

[0025] With the above technical solution, calculating different parameters for various collected data can display the fitting degree of the artificial bone implanted in the human body in the form of data, assisting doctors in making judgments.

[0026] Preferably, the fitness between the artificial bone and the human simulated bone is generated by combining the pressure data and the distance data. The fitness value is marked as S, and the calculation formula is as follows:

[0027] S = ω1A i + ω1a i + ω2B i + ω2b i

[0028] ω1 + ω2 = 1

[0029] where ω1 is the weight of the pressure data and ω2 is the weight of the distance data.

[0030] By adopting the above technical solution, the fitness of the artificial bone implanted into the human body can be quantified in the form of data by using the fitness value, assisting the doctor in making a judgment.

[0031] Compared with the prior art, the beneficial effects of the present invention are as follows: The orthopedic implant test mold system based on orthopedics:

[0032] 1. In the present invention, a simulated test module formed by connecting the artificial bone of the implanted bone and the human simulated bone of the simulated bone is set to perform a pre-operative test mold process on the implanted bone. Miniature pressure sensors and miniature ranging sensors are respectively installed on the surfaces of the artificial bone and the human simulated bone. The miniature pressure sensors and the miniature ranging sensors can be used to monitor the pressure data and the distance data at the artificial bone and the human simulated bone during the test mold process in real time, thereby providing data support for the doctor, reducing the influence of the doctor's lack of experience or individual differences on the test mold result, and increasing the success rate of orthopedic implant surgery;

[0033] Furthermore, multiple sensors are set on the surfaces of the artificial bone and the human simulated bone, so that multiple data can be obtained, and the data is quantitatively analyzed. The standard deviation of the pressure data is calculated to judge the uniformity of the pressure distribution, thereby judging whether the force condition of the implant during the simulated movement process is reasonable. The distance data is combined with the pressure and distance data to generate a fitness value, improving the accuracy of implant selection and reducing the surgical risk of orthopedic implants caused by poor fitness;

[0034] 2. In the present invention, a simulated motion traction frame is set to simulate the human motion of the connected artificial bone and human simulated bone, so as to simulate the wear condition of the artificial bone during use to the greatest extent, and can more accurately fit the condition between the implanted bone and the simulated bone. During the simulated motion process, an image data is taken by a CT scanner, and a three-dimensional image model is generated by using the image data to intuitively display the fitting condition between the implanted bone and the simulated bone during the motion process. BRIEF DESCRIPTION OF THE DRAWINGS

[0035] Figure 1Schematic diagram of the system structure of the present invention;

[0036] Figure 2 Schematic diagram of the structure of the data acquisition module of the present invention;

[0037] Figure 3 Schematic diagram of the connection structure of the simulation test module of the present invention;

[0038] Figure 4 Schematic diagram of the data distribution structure on the surface of the simulated bone of the present invention;

[0039] Figure 5 Schematic diagram of the data distribution structure on the surface of the implanted bone of the present invention. Detailed implementation manners

[0040] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0041] Please refer to Figures 1 - 5 , the present invention provides a technical solution: an orthopedic implant test mold system for orthopedics.

[0042] The implant module and the simulated bone module constitute a simulation test module. The simulation test module is connected to a data acquisition module via a wireless network. The data acquisition module is connected to a computer. The computer is connected to a data analysis module and a mechanical simulation module. The mechanical simulation module is connected to the simulated bone module. The simulation test module utilizes the connection between the implant module and the simulated bone module to simulate the movement of the implant after being implanted into the human skeleton, and then performs a trial mold test on the implant to obtain the implant trial mold data. The implant module includes an implanted bone part and a wear mark part. The implanted bone part is an artificial bone made of titanium alloy material. The wear mark part is provided with wear mark points. The wear mark points are fluorescent coatings. The wear mark points of the wear mark part are set on the outer surface of the artificial bone. The simulated bone module includes a simulated bone part. The simulated bone part is a human simulated bone made of hydroxyapatite. The mechanical simulation module includes a simulated motion traction frame. The simulated motion traction frame is connected to the human simulated bone of the simulated bone module, the simulated motion traction frame has a built-in controller, the controller of the simulated motion traction frame is connected to a computer, the computer remotely operates the controller to realize the movement of the simulated motion traction frame, the simulated motion traction frame drives the human simulated bone to realize the movement simulation of the human bone, the data acquisition module includes a sensor part and an image acquisition part, the sensor part includes a micro pressure sensor and a micro distance sensor, the micro pressure sensor and the micro distance sensor are provided in a group, one group of micro pressure sensors and micro distance sensors are installed on the surface of the artificial bone of the implanted bone part, and the other group of micro pressure sensors and micro distance sensors are installed on the surface of the human simulated bone of the simulated bone part, the micro pressure sensor and the micro distance sensor are connected to the computer through wireless signals, the image acquisition part includes a CT scanner, and the CT scanner is connected to the computer;

[0043] like Figure 1 , Figure 2 and Figure 3 As shown, in the process of using the system to test the orthopedic implant, the artificial bone made of titanium alloy material is first connected to the human body simulation bone made of hydroxyapatite to simulate the situation after the artificial bone is implanted in the human body. At this time, the fluorescent coating arranged on the surface of the artificial bone is opposite to the surface of the human body simulation bone, and the micro pressure sensor and micro ranging sensor arranged on the surface of the artificial bone and the human body simulation bone are started and connected to the computer respectively, and the human body simulation bone is connected to the simulation motion traction frame, and the computer built-in program is used to control the start of the simulation motion traction frame to drive the human body simulation bone and the artificial bone implant to move, so as to simulate the wear and tear of the artificial bone in the human body after being implanted in the human body. At the same time, the image data of the human body simulation bone and the artificial bone are collected by a CT scanner and transmitted to the computer.

[0044] The data analysis module receives data from the data acquisition module. The data types include the pressure data of the micro pressure sensor, the distance data of the micro ranging sensor, and the image data of the CT scanner. After the image data is input into the computer, it is used to construct a three-dimensional image model of the artificial bone and the human simulated bone. The pressure data and distance data are marked and recorded as follows: The pressure data at the artificial bone part of the implanted bone is marked as X, and the pressure data of multiple artificial bones constitutes a data set A = {X1, X2, X3... X n ,}, the pressure data of the human simulated bone in the simulated bone part is marked as x, and the pressure data of multiple human simulated bones constitutes a data set a = {x1, x2, x3... x n ,}, the distance data at the artificial bone part of the implanted bone is marked as Y, and the distance data of multiple artificial bones constitutes a data set B = {Y1, Y2, Y3... Y n ,}, the distance data of the human simulated bone in the simulated bone part is marked as y, and the pressure data of multiple human simulated bones constitutes a data set b = {y1, y2, y3... y n ,}

[0045] Calculate the standard deviation of the pressure data. The formula is as follows:

[0046]

[0047] Where Aa is the pressure data; σ is the population standard deviation; n is the sample size; Aa i is the i-th data value in the sample; is the average value of the sample data;

[0048] σ As The data is used to judge the distribution uniformity of the pressure data;

[0049] Calculate the difference between B and b,

[0050] Δ = B i ― b i

[0051] Where Bb i is the i-th data value in the sample,

[0052] The Δ data is used to eliminate the outliers in the distance data; Combine the pressure data and the distance data to generate the fitness between the artificial bone and the human simulated bone. The fitness value is marked as S. The calculation formula is as follows:

[0053] S = ω1A i + ω1a i + ω2B i + ω2b i

[0054] ω1 + ω2 = 1

[0055] where ω1 is the weight of pressure data and ω2 is the weight of distance data;

[0056] Such as Figure 4 and Figure 5 As shown, after the data input from the data acquisition module enters the data analysis module, computer calculation and analysis are performed, including the pressure data A at the artificial bone and the pressure data a of the human simulated bone, and their standard deviations σ are calculated respectively. Aa , and the standard deviation data is used to reflect the dispersion degree of the pressure at the artificial bone and the human simulated bone. If the σ Aa data is small, it indicates that the pressure distribution is uniform after the artificial bone is implanted, and the force condition between the implant and the bone is relatively stable during the simulated movement, which is beneficial to improving the fitting degree. If the σ Aa data is large, it means that the pressure distribution is uneven after the artificial bone is implanted, resulting in local excessive wear or instability and reducing the fitting degree; the distance data B at the part of the artificial bone of the implanted bone collected by the micro-range sensor and the distance data b at the human simulated bone are collected, and Δ = B - b is calculated. The Δ data value is used to preliminarily eliminate outliers from the distance data, and the remaining distance data is judged. If there are abnormalities in the distance data, it may indicate deviations in the size, shape or placement position of the implant, thus affecting the fitting degree. Combining the pressure data and the distance data, the fitting degree S is calculated by weighted summation. The numerical value of S is used to quantify the fitting degree between the artificial bone implantation and the human body, thereby increasing the success rate of orthopedic implantation surgery.

[0057] Working principle: Connect the implant module and the simulated bone module to form a simulated test module, and connect it to the data acquisition module through a wireless network to collect data during the test. Use the simulated motion traction frame to simulate the movement process of the implanted artificial bone in the human body. Use the micro-pressure sensor and the micro-range sensor to collect and input the data into the computer, and use the computer to analyze the data. Use σ Aa to judge the pressure distribution of the artificial bone, use the distance data to judge the placement position of the artificial bone, etc., and combine the pressure data and the distance data to quantitatively generate the fitting degree S. The numerical value of S is used to assist the doctor in judging the fitting degree between the artificial bone implantation and the human body, thereby increasing the success rate of orthopedic implantation surgery.

[0058] Although the embodiments of the present invention have been shown and described, those of ordinary skill in the art can understand that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principle and spirit of the present invention.

Claims

1. An orthopedic implant trial mold system for orthopedics, comprising an implant module, a simulated bone module, a simulation test module, a mechanical simulation module, a computer, a data acquisition module and a data analysis module, characterized in that: The implant module and the simulated bone module constitute a simulation test module, the simulation test module is connected to a data acquisition module via a wireless network, the data acquisition module is connected to a computer, the computer is connected to a data analysis module and a mechanical simulation module, the mechanical simulation module is connected to the simulated bone module, the simulation test module utilizes the connection between the implant module and the simulated bone module to simulate the movement of the implant after being implanted into the human skeleton, and then performs a trial mold test on the implant to obtain implant trial mold data.

2. The orthopedic implant trial mold system for orthopedics according to claim 1, characterized in that: The implant module includes a bone implant part and a wear marking part, the bone implant part is an artificial bone made of titanium alloy material, the wear marking part is provided with wear marking points, the wear marking points are fluorescent coatings, and the wear marking points of the wear marking part are arranged on the outer surface of the artificial bone.

3. The orthopaedic implant trial mould system for orthopaedics according to claim 1, characterized in that: The simulated bone module comprises a simulated bone part, and the simulated bone part is a simulated human bone made of hydroxyapatite.

4. The orthopedic implant trial mold system for orthopedics according to claim 1, wherein: The mechanical simulation module includes a simulated motion traction frame, which is connected to the human simulated skeleton of the simulated bone module. The simulated motion traction frame has a built-in controller, and the controller of the simulated motion traction frame is connected to a computer. The computer remotely operates the controller to realize the movement of the simulated motion traction frame, and the simulated motion traction frame drives the human simulated skeleton to realize the movement simulation of the human skeleton.

5. A kind of orthopedic implant trial mold system based on orthopedics according to claim 1, characterized in that: The data acquisition module includes a sensor part and an image acquisition part. The sensor part includes a micro pressure sensor and a micro distance sensor. The micro pressure sensor and the micro distance sensor are arranged in a group, wherein one group of the micro pressure sensor and the micro distance sensor are installed on the surface of the artificial bone of the implanted bone part, and the other group of the micro pressure sensor and the micro distance sensor are installed on the surface of the human body simulated bone of the simulated bone part. The micro pressure sensor and the micro distance sensor are connected to the computer through wireless signals. The image acquisition part includes a CT scanner, and the CT scanner is connected to the computer.

6. The orthopedic implant trial mold system for orthopedics according to claim 1, characterized in that: The data analysis module receives data from the data acquisition module, and the data types include pressure data from a micro pressure sensor, distance data from a micro ranging sensor, and image data from a CT scanner. After the image data is input into a computer, it is used to construct a three-dimensional image model of an artificial bone and a human simulated bone.

7. The orthopedic implant trial mold system for orthopedics according to claim 6, wherein: The pressure data and distance data are respectively marked and recorded as follows. The pressure data at the artificial bone of the implanted bone part is marked as X, and the pressure data of multiple artificial bones constitutes a data set A = {X1, X2, X3......X n ,}, the pressure data of the human simulated bone of the simulated bone part is marked as x, and the pressure data of multiple human simulated bones constitutes a data set a = {x1, x2, x3......x n ,}, the distance data at the artificial bone of the implanted bone part is marked as Y, and the distance data of multiple artificial bones constitutes a data set B = {Y1, Y2, Y3......Y n ,}, the distance data of the human simulated bone of the simulated bone part is marked as y, and the pressure data of multiple human simulated bones constitutes a data set b = {y1, y2, y3......y n ,}; The standard deviation of the pressure data is calculated as follows: where Aa is the pressure data; σ is the overall standard deviation; n is the sample size; Aa i is the i-th data value within the sample; is the average value of the sample data; The said σ Aa data is used to judge the distribution uniformity of the pressure data; Calculate the difference between B and b, Δ = B i -b i where Bb i is the i-th data value within the sample, The Δ data is used to eliminate abnormal values in the distance data.

8. A kind of orthopedic implant trial mold system based on orthopedics according to claim 7, characterized in that: The pressure data and the distance data are combined to generate the degree of fit between the artificial bone and the simulated human bone. The value of the degree of fit is marked as S and the calculation formula is as follows: S = ω1A i + ω1a i + ω2B i + ω2b i ω1+ω2=1 Where ω1 is the weight of pressure data and ω2 is the weight of distance data.

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